|Ceramic mercury jug.
Mercury is not something you want to spill: Cleanup of a large mercury spill can be hugely expensive because it can get into the smallest places, and it's toxic enough that every last trace needs to be removed.
So I'd say a fragile ceramic bottle would be about the last place I'd want to store 10 pounds or more of mercury, which is why this one is going to stay as empty as it arrived. In modern times bulk quantities of mercury are stored in iron cylinders that look at lot like compressed gas cylinders and are completely unbreakable.
Source: eBay seller ultimatecollectibles19
Contributor: Theodore Gray
Acquired: 14 June, 2008
Text Updated: 14 June, 2008